"""
Base Django settings for thrillwiki project.
Common settings shared across all environments.
"""

from datetime import timedelta
import sys
from pathlib import Path
from decouple import config


# Initialize environment variables with better defaults

DEBUG = config("DEBUG", default=True)
SECRET_KEY = config("SECRET_KEY")
ALLOWED_HOSTS = config("ALLOWED_HOSTS")
DATABASE_URL = config("DATABASE_URL")
CACHE_URL = config("CACHE_URL", default="locmem://")
EMAIL_URL = config("EMAIL_URL", default="console://")
REDIS_URL = config("REDIS_URL", default="redis://127.0.0.1:6379/1")
CORS_ALLOWED_ORIGINS = config("CORS_ALLOWED_ORIGINS", default=[])
API_RATE_LIMIT_PER_MINUTE = config("API_RATE_LIMIT_PER_MINUTE", default=60)
API_RATE_LIMIT_PER_HOUR = config("API_RATE_LIMIT_PER_HOUR", default=1000)
CACHE_MIDDLEWARE_SECONDS = config("CACHE_MIDDLEWARE_SECONDS", default=300)
CACHE_MIDDLEWARE_KEY_PREFIX = config(
    "CACHE_MIDDLEWARE_KEY_PREFIX", default="thrillwiki"
)
GDAL_LIBRARY_PATH = config(
    "GDAL_LIBRARY_PATH", default="/opt/homebrew/lib/libgdal.dylib"
)
GEOS_LIBRARY_PATH = config(
    "GEOS_LIBRARY_PATH", default="/opt/homebrew/lib/libgeos_c.dylib"
)

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent.parent

# Add apps directory to sys.path so Django can find the apps
apps_dir = BASE_DIR / "apps"
if apps_dir.exists() and str(apps_dir) not in sys.path:
    sys.path.insert(0, str(apps_dir))

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = config("SECRET_KEY")

# Allowed hosts
ALLOWED_HOSTS = config("ALLOWED_HOSTS")

# CSRF trusted origins
CSRF_TRUSTED_ORIGINS = config(
    "CSRF_TRUSTED_ORIGINS", default=[]
)  # type: ignore[arg-type]

# Application definition
DJANGO_APPS = [
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "django.contrib.sites",
    "django.contrib.gis",  # GeoDjango
]

THIRD_PARTY_APPS = [
    # Django Cloudflare Images Toolkit - moved to top to avoid circular imports
    "django_cloudflareimages_toolkit",
    "rest_framework",  # Django REST Framework
    # Token authentication (kept for backward compatibility)
    "rest_framework.authtoken",
    "rest_framework_simplejwt",  # JWT authentication
    "rest_framework_simplejwt.token_blacklist",  # JWT token blacklist
    "dj_rest_auth",  # REST authentication with JWT support
    "dj_rest_auth.registration",  # REST registration support
    "drf_spectacular",  # OpenAPI 3.0 documentation
    "corsheaders",  # CORS headers for API
    "pghistory",  # django-pghistory
    "pgtrigger",  # Required by django-pghistory
    "allauth",
    "allauth.account",
    "allauth.socialaccount",
    "allauth.socialaccount.providers.google",
    "allauth.socialaccount.providers.discord",
    "django_cleanup",
    "django_filters",
    "django_htmx",
    "whitenoise",
    "django_tailwind_cli",
    "autocomplete",  # Django HTMX Autocomplete
    "health_check",  # Health checks
    "health_check.db",
    "health_check.cache",
    "health_check.storage",
    "health_check.contrib.migrations",
    "health_check.contrib.redis",
    "django_celery_beat",  # Celery beat scheduler
    "django_celery_results",  # Celery result backend
    "django_extensions",  # Django Extensions for enhanced development tools
]

LOCAL_APPS = [
    "apps.core",
    "apps.accounts",
    "apps.parks",
    "apps.rides",
    "api",  # Centralized API app (located at backend/api/)
    "django_forwardemail",  # New PyPI package for email service
    "apps.moderation",
]

INSTALLED_APPS = DJANGO_APPS + THIRD_PARTY_APPS + LOCAL_APPS

MIDDLEWARE = [
    "django.middleware.cache.UpdateCacheMiddleware",
    "corsheaders.middleware.CorsMiddleware",  # CORS middleware for API
    "django.middleware.security.SecurityMiddleware",
    "whitenoise.middleware.WhiteNoiseMiddleware",
    "django.contrib.sessions.middleware.SessionMiddleware",
    "django.middleware.common.CommonMiddleware",
    "django.middleware.csrf.CsrfViewMiddleware",
    "django.contrib.auth.middleware.AuthenticationMiddleware",
    "django.contrib.messages.middleware.MessageMiddleware",
    "django.middleware.clickjacking.XFrameOptionsMiddleware",
    "apps.core.middleware.analytics.PgHistoryContextMiddleware",  # Add history context tracking
    "allauth.account.middleware.AccountMiddleware",
    "django.middleware.cache.FetchFromCacheMiddleware",
    "django_htmx.middleware.HtmxMiddleware",
]

ROOT_URLCONF = "thrillwiki.urls"

# Add a toggle to enable/disable Django template support via env var
# Use a distinct environment variable name so it doesn't collide with Django's TEMPLATES setting
TEMPLATES_ENABLED = config("TEMPLATES_ENABLED", default=True, cast=bool)

# Conditional TEMPLATES configuration
if TEMPLATES_ENABLED:
    TEMPLATES = [
        {
            "BACKEND": "django.template.backends.django.DjangoTemplates",
            "DIRS": [BASE_DIR / "templates"],
            "APP_DIRS": True,
            "OPTIONS": {
                "context_processors": [
                    "django.template.context_processors.debug",
                    "django.template.context_processors.request",
                    "django.contrib.auth.context_processors.auth",
                    "django.contrib.messages.context_processors.messages",
                    "moderation.context_processors.moderation_access",
                ]
            },
        }
    ]
else:
    # When templates are disabled, we still need APP_DIRS=True for DRF Spectacular to work
    TEMPLATES = [
        {
            "BACKEND": "django.template.backends.django.DjangoTemplates",
            "APP_DIRS": True,  # Changed from False to True to support DRF Spectacular templates
            "DIRS": [BASE_DIR / "templates/" / "404"],
            "OPTIONS": {
                "context_processors": [
                    "django.template.context_processors.debug",
                    "django.template.context_processors.request",
                    "django.contrib.auth.context_processors.auth",
                    "django.contrib.messages.context_processors.messages",
                    "moderation.context_processors.moderation_access",
                ]
            },
        }
    ]

WSGI_APPLICATION = "thrillwiki.wsgi.application"

# Cloudflare Images Settings - Updated for django-cloudflareimages-toolkit
CLOUDFLARE_IMAGES = {
    'ACCOUNT_ID': config("CLOUDFLARE_IMAGES_ACCOUNT_ID"),
    'API_TOKEN': config("CLOUDFLARE_IMAGES_API_TOKEN"),
    'ACCOUNT_HASH': config("CLOUDFLARE_IMAGES_ACCOUNT_HASH"),

    # Optional settings
    'DEFAULT_VARIANT': 'public',
    'UPLOAD_TIMEOUT': 300,
    'WEBHOOK_SECRET': config("CLOUDFLARE_IMAGES_WEBHOOK_SECRET", default=""),
    'CLEANUP_EXPIRED_HOURS': 24,
    'MAX_FILE_SIZE': 10 * 1024 * 1024,  # 10MB
    'ALLOWED_FORMATS': ['jpeg', 'png', 'gif', 'webp'],
    'REQUIRE_SIGNED_URLS': False,
    'DEFAULT_METADATA': {},
}

# Storage configuration
STORAGES = {
    "default": {
        "BACKEND": "django.core.files.storage.FileSystemStorage",
        "OPTIONS": {
            "location": str(BASE_DIR.parent / "shared" / "media"),
        },
    },
    "staticfiles": {
        "BACKEND": "django.contrib.staticfiles.storage.StaticFilesStorage",
        "OPTIONS": {
            "location": str(BASE_DIR / "staticfiles"),
        },
    },
}

# Password validation
AUTH_PASSWORD_VALIDATORS = [
    {
        "NAME": (
            "django.contrib.auth.password_validation.UserAttributeSimilarityValidator"
        ),
    },
    {
        "NAME": "django.contrib.auth.password_validation.MinimumLengthValidator",
    },
    {
        "NAME": "django.contrib.auth.password_validation.CommonPasswordValidator",
    },
    {
        "NAME": "django.contrib.auth.password_validation.NumericPasswordValidator",
    },
]

# Internationalization
LANGUAGE_CODE = "en-us"
TIME_ZONE = "America/New_York"
USE_I18N = True
USE_TZ = True

# Static files (CSS, JavaScript, Images)
STATIC_URL = "static/"
STATICFILES_DIRS = [BASE_DIR / "static"]
STATIC_ROOT = BASE_DIR / "staticfiles"

# Media files - point to shared/media directory
MEDIA_URL = "/media/"
MEDIA_ROOT = BASE_DIR.parent / "shared" / "media"

# Default primary key field type
DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"

# Authentication settings
AUTHENTICATION_BACKENDS = [
    "django.contrib.auth.backends.ModelBackend",
    "allauth.account.auth_backends.AuthenticationBackend",
]

# django-allauth settings
SITE_ID = 1

# CORRECTED: Django allauth still expects the old format with asterisks for required fields
# The deprecation warnings are from dj_rest_auth, not our configuration
ACCOUNT_SIGNUP_FIELDS = ["email*", "username*", "password1*", "password2*"]

ACCOUNT_LOGIN_METHODS = {"email", "username"}
ACCOUNT_EMAIL_VERIFICATION = "mandatory"
ACCOUNT_EMAIL_VERIFICATION_SUPPORTS_CHANGE = True
ACCOUNT_EMAIL_VERIFICATION_SUPPORTS_RESEND = True
ACCOUNT_REAUTHENTICATION_REQUIRED = True
ACCOUNT_EMAIL_NOTIFICATIONS = True
ACCOUNT_EMAIL_UNKNOWN_ACCOUNTS = False
LOGIN_REDIRECT_URL = "/"
ACCOUNT_LOGOUT_REDIRECT_URL = "/"

# Custom adapters
ACCOUNT_ADAPTER = "apps.accounts.adapters.CustomAccountAdapter"
SOCIALACCOUNT_ADAPTER = "apps.accounts.adapters.CustomSocialAccountAdapter"

# Social account settings
SOCIALACCOUNT_PROVIDERS = {
    "google": {
        "SCOPE": [
            "profile",
            "email",
        ],
        "AUTH_PARAMS": {"access_type": "online"},
    },
    "discord": {
        "SCOPE": ["identify", "email"],
        "OAUTH_PKCE_ENABLED": True,
    },
}

# Additional social account settings
SOCIALACCOUNT_LOGIN_ON_GET = True
SOCIALACCOUNT_AUTO_SIGNUP = False
SOCIALACCOUNT_STORE_TOKENS = True

# Custom User Model
AUTH_USER_MODEL = "accounts.User"

# Autocomplete configuration
AUTOCOMPLETE_BLOCK_UNAUTHENTICATED = False

# Tailwind configuration
TAILWIND_CLI_CONFIG_FILE = "tailwind.config.js"
TAILWIND_CLI_SRC_CSS = "static/css/src/input.css"
TAILWIND_CLI_DIST_CSS = "css/tailwind.css"

# Test runner
TEST_RUNNER = "django.test.runner.DiscoverRunner"

# Road Trip Service Settings
ROADTRIP_CACHE_TIMEOUT = 3600 * 24  # 24 hours for geocoding
ROADTRIP_ROUTE_CACHE_TIMEOUT = 3600 * 6  # 6 hours for routes
ROADTRIP_MAX_REQUESTS_PER_SECOND = 1  # Respect OSM rate limits
ROADTRIP_USER_AGENT = config("ROADTRIP_USER_AGENT")
ROADTRIP_REQUEST_TIMEOUT = 10  # seconds
ROADTRIP_MAX_RETRIES = 3
ROADTRIP_BACKOFF_FACTOR = 2

# Frontend URL Configuration
FRONTEND_DOMAIN = config("FRONTEND_DOMAIN", default="https://thrillwiki.com")

# ForwardEmail Configuration
FORWARD_EMAIL_BASE_URL = config(
    "FORWARD_EMAIL_BASE_URL", default="https://api.forwardemail.net")
FORWARD_EMAIL_API_KEY = config("FORWARD_EMAIL_API_KEY", default="")
FORWARD_EMAIL_DOMAIN = config("FORWARD_EMAIL_DOMAIN", default="")

# Django REST Framework Settings
REST_FRAMEWORK = {
    "DEFAULT_AUTHENTICATION_CLASSES": [
        "rest_framework_simplejwt.authentication.JWTAuthentication",
        "rest_framework.authentication.SessionAuthentication",
        "rest_framework.authentication.TokenAuthentication",  # Kept for backward compatibility
    ],
    "DEFAULT_PERMISSION_CLASSES": [
        "rest_framework.permissions.IsAuthenticated",
    ],
    "DEFAULT_PAGINATION_CLASS": "rest_framework.pagination.PageNumberPagination",
    "PAGE_SIZE": 20,
    "DEFAULT_VERSIONING_CLASS": "rest_framework.versioning.AcceptHeaderVersioning",
    "DEFAULT_VERSION": "v1",
    "ALLOWED_VERSIONS": ["v1"],
    "DEFAULT_RENDERER_CLASSES": [
        "rest_framework.renderers.JSONRenderer",
        "rest_framework.renderers.BrowsableAPIRenderer",
    ],
    "DEFAULT_PARSER_CLASSES": [
        "rest_framework.parsers.JSONParser",
        "rest_framework.parsers.FormParser",
        "rest_framework.parsers.MultiPartParser",
    ],
    "EXCEPTION_HANDLER": "apps.core.api.exceptions.custom_exception_handler",
    "DEFAULT_FILTER_BACKENDS": [
        "django_filters.rest_framework.DjangoFilterBackend",
        "rest_framework.filters.SearchFilter",
        "rest_framework.filters.OrderingFilter",
    ],
    "TEST_REQUEST_DEFAULT_FORMAT": "json",
    "NON_FIELD_ERRORS_KEY": "non_field_errors",
    "DEFAULT_SCHEMA_CLASS": "drf_spectacular.openapi.AutoSchema",
}

# CORS Settings for API

CORS_ALLOW_CREDENTIALS = True
CORS_ALLOW_ALL_ORIGINS = config(
    "CORS_ALLOW_ALL_ORIGINS", default=False, cast=bool
)  # type: ignore[arg-type]


API_RATE_LIMIT_PER_MINUTE = config(
    "API_RATE_LIMIT_PER_MINUTE", default=60, cast=int
)  # type: ignore[arg-type]
API_RATE_LIMIT_PER_HOUR = config(
    "API_RATE_LIMIT_PER_HOUR", default=1000, cast=int
)  # type: ignore[arg-type]
SPECTACULAR_SETTINGS = {
    "TITLE": "ThrillWiki API",
    "DESCRIPTION": "Comprehensive theme park and ride information API",
    "VERSION": "1.0.0",
    "SERVE_INCLUDE_SCHEMA": False,
    "COMPONENT_SPLIT_REQUEST": True,
    "TAGS": [
        {"name": "Parks", "description": "Theme park operations"},
        {"name": "Rides", "description": "Ride information and management"},
        {
            "name": "Statistics",
            "description": "Statistical endpoints providing aggregated data and insights",
        },
    ],
    "SCHEMA_PATH_PREFIX": "/api/",
    "DEFAULT_GENERATOR_CLASS": "drf_spectacular.generators.SchemaGenerator",
    "DEFAULT_AUTO_SCHEMA": "drf_spectacular.openapi.AutoSchema",
    "PREPROCESSING_HOOKS": [
        "api.v1.schema.custom_preprocessing_hook",
    ],
    # "POSTPROCESSING_HOOKS": [
    #     "api.v1.schema.custom_postprocessing_hook",
    # ],
    "SERVE_PERMISSIONS": ["rest_framework.permissions.AllowAny"],
    "SWAGGER_UI_SETTINGS": {
        "deepLinking": True,
        "persistAuthorization": True,
        "displayOperationId": False,
        "displayRequestDuration": True,
    },
    "REDOC_UI_SETTINGS": {
        "hideDownloadButton": False,
        "hideHostname": False,
        "hideLoading": False,
        "hideSchemaPattern": True,
        "scrollYOffset": 0,
        "theme": {"colors": {"primary": {"main": "#1976d2"}}},
    },
}

# Health Check Configuration
HEALTH_CHECK = {
    "DISK_USAGE_MAX": 90,  # Fail if disk usage is over 90%
    "MEMORY_MIN": 100,  # Fail if less than 100MB available memory
}

# Custom health check backends
HEALTH_CHECK_BACKENDS = [
    "health_check.db",
    "health_check.cache",
    "health_check.storage",
    "core.health_checks.custom_checks.CacheHealthCheck",
    "core.health_checks.custom_checks.DatabasePerformanceCheck",
    "core.health_checks.custom_checks.ApplicationHealthCheck",
    "core.health_checks.custom_checks.ExternalServiceHealthCheck",
    "core.health_checks.custom_checks.DiskSpaceHealthCheck",
]

# Enhanced Cache Configuration
DJANGO_REDIS_CACHE_BACKEND = "django_redis.cache.RedisCache"
DJANGO_REDIS_CLIENT_CLASS = "django_redis.client.DefaultClient"

CACHES = {
    "default": {
        "BACKEND": DJANGO_REDIS_CACHE_BACKEND,
        # pyright: ignore[reportArgumentType]
        # type: ignore
        "LOCATION": config("REDIS_URL", default="redis://127.0.0.1:6379/1"),
        "OPTIONS": {
            "CLIENT_CLASS": DJANGO_REDIS_CLIENT_CLASS,
            "PARSER_CLASS": "redis.connection.HiredisParser",
            "CONNECTION_POOL_CLASS": "redis.BlockingConnectionPool",
            "CONNECTION_POOL_CLASS_KWARGS": {
                "max_connections": 50,
                "timeout": 20,
            },
            "COMPRESSOR": "django_redis.compressors.zlib.ZlibCompressor",
            "IGNORE_EXCEPTIONS": True,
        },
        "KEY_PREFIX": "thrillwiki",
        "VERSION": 1,
    },
    "sessions": {
        "BACKEND": DJANGO_REDIS_CACHE_BACKEND,
        "LOCATION": config("REDIS_URL", default="redis://127.0.0.1:6379/2"),
        "OPTIONS": {
            "CLIENT_CLASS": DJANGO_REDIS_CLIENT_CLASS,
        },
    },
    "api": {
        "BACKEND": DJANGO_REDIS_CACHE_BACKEND,
        "LOCATION": config("REDIS_URL", default="redis://127.0.0.1:6379/3"),
        "OPTIONS": {
            "CLIENT_CLASS": DJANGO_REDIS_CLIENT_CLASS,
        },
    },
}

# Use Redis for sessions
SESSION_ENGINE = "django.contrib.sessions.backends.cache"
SESSION_CACHE_ALIAS = "sessions"
SESSION_COOKIE_AGE = 86400  # 24 hours

# Cache middleware settings
CACHE_MIDDLEWARE_SECONDS = 300  # 5 minutes
CACHE_MIDDLEWARE_KEY_PREFIX = "thrillwiki"

# JWT Settings

SIMPLE_JWT = {
    "ACCESS_TOKEN_LIFETIME": timedelta(minutes=60),  # 1 hour
    "REFRESH_TOKEN_LIFETIME": timedelta(days=7),  # 7 days
    "ROTATE_REFRESH_TOKENS": True,
    "BLACKLIST_AFTER_ROTATION": True,
    "UPDATE_LAST_LOGIN": True,
    "ALGORITHM": "HS256",
    "SIGNING_KEY": SECRET_KEY,
    "VERIFYING_KEY": None,
    "AUDIENCE": None,
    "ISSUER": None,
    "JWK_URL": None,
    "LEEWAY": 0,
    "AUTH_HEADER_TYPES": ("Bearer",),
    "AUTH_HEADER_NAME": "HTTP_AUTHORIZATION",
    "USER_ID_FIELD": "id",
    "USER_ID_CLAIM": "user_id",
    "USER_AUTHENTICATION_RULE": "rest_framework_simplejwt.authentication.default_user_authentication_rule",
    "AUTH_TOKEN_CLASSES": ("rest_framework_simplejwt.tokens.AccessToken",),
    "TOKEN_TYPE_CLAIM": "token_type",
    "TOKEN_USER_CLASS": "rest_framework_simplejwt.models.TokenUser",
    "JTI_CLAIM": "jti",
    "SLIDING_TOKEN_REFRESH_EXP_CLAIM": "refresh_exp",
    "SLIDING_TOKEN_LIFETIME": timedelta(minutes=60),
    "SLIDING_TOKEN_REFRESH_LIFETIME": timedelta(days=1),
}

# dj-rest-auth settings
REST_AUTH = {
    "USE_JWT": True,
    "JWT_AUTH_COOKIE": "thrillwiki-auth",
    "JWT_AUTH_REFRESH_COOKIE": "thrillwiki-refresh",
    "JWT_AUTH_SECURE": not DEBUG,  # Use secure cookies in production
    "JWT_AUTH_HTTPONLY": True,
    "JWT_AUTH_SAMESITE": "Lax",
    "JWT_AUTH_RETURN_EXPIRATION": True,
    "JWT_TOKEN_CLAIMS_SERIALIZER": "rest_framework_simplejwt.serializers.TokenObtainPairSerializer",
}